So the tactic Bloomberg used was to target areas where many people would sign for Ognibene, knowing that Ognibene would sign up the same people, causing double entries that would make all the petitions challengeable.
For a "nonpolitician neophyte" he sure learned the dirty machine tricks very quickly.
But yes, they stormed Ognibene's main area before he could get to it. Ognibene's people had a lot of luck at the bars, where people are against the smoking ban. It wasn't enough, even with the addition of signatures from another candidate (which was absurd; they never should have tried that one).